PhoneGap download plugin - jquery-mobile

Question

This is my downloader plugin for my phonegap and jquery app..this plugin is working but i want to change that fixed URL ("http://farm9.staticflickr.com/8010/7293758472_823d2eef5c_z.jpg") to current URL..(i want download jpg from current url).thanx
Downloader.java
package com.phonegap.plugins.downloader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
public class Downloader extends Plugin {
#Override
public PluginResult execute(String action, JSONArray args, String callbackId) {
if (!action.equals("downloadFile"))
return new PluginResult(PluginResult.Status.INVALID_ACTION);
try {
String fileUrl = args.getString(0);
JSONObject params = args.getJSONObject(1);
String fileName = params.has("fileName") ?
params.getString("fileName"):
fileUrl.substring(fileUrl.lastIndexOf("/")+1);
String dirName = params.has("dirName") ?
params.getString("dirName"):
"sdcard/PhotoBunch";
Boolean overwrite = params.has("overwrite") ? params.getBoolean("overwrite") : false;
return this.downloadUrl(fileUrl, dirName, fileName, overwrite, callbackId);
} catch (JSONException e) {
e.printStackTrace();
return new PluginResult(PluginResult.Status.JSON_EXCEPTION, e.getMessage());
} catch (InterruptedException e) {
e.printStackTrace();
return new PluginResult(PluginResult.Status.ERROR, e.getMessage());
}
}
private PluginResult downloadUrl(String fileUrl, String dirName, String fileName, Boolean overwrite, String callbackId) throws InterruptedException, JSONException {
try {
Log.d("PhoneGapLog", "Downloading "+fileUrl + " into " + dirName + "/" + fileName);
File dir = new File(dirName);
if (!dir.exists()) {
Log.d("PhoneGapLog", "directory " + dirName + " created");
dir.mkdirs();
}
File file = new File(dirName, fileName);
if (!overwrite && file.exists()) {
Log.d("DownloaderPlugin", "File already exist");
JSONObject obj = new JSONObject();
obj.put("status", 1);
obj.put("total", 0);
obj.put("file", fileName);
obj.put("progress", 100);
return new PluginResult(PluginResult.Status.OK, obj);
}
URL url = new URL(fileUrl);
HttpURLConnection ucon = (HttpURLConnection) url.openConnection();
ucon.setRequestMethod("GET");
ucon.setDoOutput(true);
ucon.connect();
Log.d("PhoneGapLog", "Download start");
InputStream is = ucon.getInputStream();
byte[] buffer = new byte[1024];
int readed = 0,
progress = 0,
totalReaded = 0,
fileSize = ucon.getContentLength();
FileOutputStream fos = new FileOutputStream(file);
while ((readed = is.read(buffer)) > 0) {
fos.write(buffer, 0, readed);
totalReaded += readed;
int newProgress = (int) (totalReaded*100/fileSize);
if (newProgress != progress)
progress = informProgress(fileSize, newProgress, fileName, callbackId);
}
fos.close();
Log.d("PhoneGapLog", "Download finished");
JSONObject obj = new JSONObject();
obj.put("status", 1);
obj.put("total", fileSize);
obj.put("file", fileName);
obj.put("progress", progress);
return new PluginResult(PluginResult.Status.OK, obj);
}
catch (FileNotFoundException e) {
Log.d("PhoneGapLog", "File Not Found: " + e);
return new PluginResult(PluginResult.Status.ERROR, 404);
}
catch (IOException e) {
Log.d("PhoneGapLog", "Error: " + e);
return new PluginResult(PluginResult.Status.ERROR, e.getMessage());
}
}
private int informProgress(int fileSize, int progress, String fileName, String callbackId) throws InterruptedException, JSONException {
JSONObject obj = new JSONObject();
obj.put("status", 0);
obj.put("total", fileSize);
obj.put("file", fileName);
obj.put("progress", progress);
PluginResult res = new PluginResult(PluginResult.Status.OK, obj);
res.setKeepCallback(true);
success(res, callbackId);
//Give a chance for the progress to be sent to javascript
Thread.sleep(100);
return progress;
} }
downloader.js
function Downloader() {}
Downloader.prototype.downloadFile = function(fileUrl, params, win, fail) {
//Make params hash optional.
if (!fail) win = params;
PhoneGap.exec(win, fail, "Downloader", "downloadFile", [fileUrl, params]);
};
PhoneGap.addConstructor(function() {
PhoneGap.addPlugin("downloader", new Downloader());
PluginManager.addService("Downloader", "com.phonegap.plugins.downloader.Downloader");
});
onClick="download()"
function download() {
window.plugins.downloader.downloadFile("http://farm9.staticflickr.com/8010/7293758472_823d2eef5c_z.jpg", {overwrite: true},
function(res) {
alert(JSON.stringify(result));
}, function(error) {
alert(error);
}
); }

Answer 1

currentURL : its the filename / complete path of the file you are downloading from a server
example :
onclick="download(myfile.zip)"
function download(fileName) {
window.plugins.downloader.downloadFile(currentUrl, {overwrite: true},
function(res) {
alert(JSON.stringify(result));},
function(error) {
alert(error);
}
); }

Answer 2

You want to do something like this:
onclick="download(this.src)"
function download(currentUrl) {
window.plugins.downloader.downloadFile(currentUrl, {overwrite: true},
function(res) {
alert(JSON.stringify(result));
}, function(error) {
alert(error);
}
); }